Progression orbs

[Bluemoon]

I wonder what are the orbs for progressions and what aspects are taken into consideration ? Should i consider semisquares too ? I have progressed Venus at 18 degrees Leo and i have natal NN - 20 degrees Leo, Pluto - 19 degrees Libra, Uranus - 21 degrees Scorpio, Moon - 16 degrees Aries and Neptune - 19 degrees Sagittarius. What should i expect from all these ?

Thanks